Chris Sutton says the belief among pundits in England that Steven Gerrard is doing a good job "couldn't be further from the truth".
The former Celtic centre-forward was looking ahead to the new Premiership season, with Rangers taking on Aberdeen at Pittodrie on Saturday and Celtic facing Hamilton Accies at Celtic Park on Sunday.
Gerrard took over at Rangers in 2018, but has failed to land a major trophy in his first two seasons.
Speaking on BBC 5 Live Sport, Sutton said: "I think the issue is there's this perception down south that Steven Gerrard has done a good job at Rangers, and as far as I'm concerned that couldn't be further from the truth.
"Now's the time to prove himself. He hasn't won anything in the last two seasons.
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"I think Neil Lennon's on record as saying if he'd been Celtic manager and hadn't won anything in two seasons he wouldn't have kept his job."
Host Kelly Cates asked: "Is the perception that he's done a good job down to the fact that people still think there's something of a rebuilding job at Ibrox, that they're doing it under different circumstances?", to which Sutton replied: "Maybe so, and I've seen comments this week that he wants to bring more players in.
"He's brought I think nearly 30 players. He's been backed.
"The big question has been over the last couple of seasons do Rangers keep finding the money for him to bring players in, so he can't complain about that, but he's had long enough now.
"And the issue for Rangers the last couple of seasons has been quite simple. It's not been the start of the season. It's been after the new year they have just fallen away.
"I mean I didn't see it happening last season Kelly, with what happened after they played so well at Celtic Park. They were dominant, they were absolutely dominant, and whatever happened in Dubai, who knows, but they came back a totally different team.
"Fell away unbelievably. The form was poor, Morelos came back, he looked heavy, didn't look quite at it.
"And that was their issue. And they've only got themselves to blame.
"They were in a brilliant, brilliant position. They just haven't been consistent enough, and that's the question again this season."
